<template>
  <div class="login">
    <div class="error"> {{message}} </div>
    <form>
      <div class="lable">
        <input name="username" type="text" v-model.trim="username" placeholder="请输入用户名" />
        <input name="password" type="password" v-model.trim="password" placeholder="请输入密码" />
      </div>
      <div class="submit">
        <input type="submit" @click.prevent="login" value="登录" />
      </div>
    </form>
  </div>
</template>
<script>
import {mapMutations} from 'vuex'
export default {
  name: "UserLogin",
  data () {
    return {
      username:'',
      password:'',
      message:''
    };
  },
  methods:{
    login(){
      this.message = '';
      if(!this.checkForm()){
        return;
      }
      this.axios.post("/user/login",
        {username:this.username,password:this.password})
      .then(res=>{
        if(res.data.code==200){
          this.saveUser(res.data.data);
          this.username = '';
          this.password = '';
          if(this.$route.query.redirect){
            const redirect = this.this.$route.query.redirect;
            this.$router.replace(redirect);
          }else{
            this.$router.replace('/');
          }
        }else if(res.data.code==500){
          this.message = "用户登陆失败";
        }else if(res.data.code==400){
          this.message = "用户名或密码错误";
        }
      })
      .catch(error=>{
        alert(error.message);
      })
    },
    ...mapMutations('user',[
      'saveUser'
    ]),
    checkForm(){
      if(!this.username || !this.password){
        this.$msgBox.show({title:"用户名和密码不能为空！"});
        return false;
      }
      return true;
    }
  },
}
</script>
<style scoped>
.login {
  margin: 5em auto 0;
  width: 44%;
}

.login input{
  padding: 15px;
  width: 94%;
  font-size: 1.1em;
  margin: 18px 0px;
  color: gray;
  float: left;
  cursor: pointer;
  font-family: "HelveticaNeue", "Helvetica Neue", Helvetica, Arial, sans-serif;
  outline: none;
  font-weight: 600;
  margin-left: 3px;
  background: #eee;
  transition: all 0.3s ease-out;
  border: solid 1px #ccc;
}

.login input:hover{
  color: rgb(180, 86, 9);
  border-left: solid 6px #40A46F;
}

.login {
  padding: 5px 4px;
  text-align: center;
}
input[type="submit"] {
  padding: 17px 17px;
  color: #fff;
  float: right;
  font-family: "HelveticaNeue", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: #40a46f;
  border: solid 1px #40a46f;
  cursor: pointer;
  font-size: 18px;
  transition: all 0.5s ease-out;
  outline: none;
  width: 100%;
}

.submit input[type="submit"]:hover {
  background: #07793d;
  border: solid 1px #07793d;
}

.login .error{
  color: red;
  font-weight: bold;
  font-size: 1.1em;
}
</style>